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  1. 08 5月, 2010 1 次提交
  3. 23 4月, 2010 1 次提交
    • H
      ALSA: snd-maestro3: Make hardware volume buttons an input device (rev2) · eb581adf
      由 Hans de Goede 提交于 
      While working on the sound suspend / resume problems with my laptop
I noticed that the hardware volume handling code in essence just detects
key presses, and then does some hardcoded modification of the master volume
based on which key is pressed.

This made me think that clearly the right thing to do here is just report
these keypresses to userspace and let userspace decide what to with them.

This patch adds a Kconfig option which when enabled reports the volume
buttons as keypresses using an input device. When enabled this option
also gets rid of the ugly direct ac97 writes from the tasklet, the ac97lock
and the need for using a tasklet in general.

As an added bonus the keys now work identical to volume keys on a (usb)
keyboard with multimedia keys, providing visual feedback of the volume
level change, and a better range of the volume control (with a properly
configured desktop environment).
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      eb581adf
  5. 22 4月, 2010 3 次提交
  7. 09 2月, 2010 1 次提交
  9. 07 4月, 2009 1 次提交
  11. 12 1月, 2009 1 次提交
  13. 18 12月, 2008 1 次提交
  15. 13 8月, 2008 1 次提交
  17. 10 7月, 2008 2 次提交
  19. 06 6月, 2008 1 次提交
  21. 24 4月, 2008 2 次提交
    • J
      [ALSA] Fix synchronize_irq() bugs, redundancies · f000fd80
      由 Jeff Garzik 提交于 
      free_irq() calls synchronize_irq() for you, so there is no need for
drivers to manually do the same thing (again).  Thus, calls where
sync-irq immediately precedes free-irq can be simplified.

However, during this audit several bugs were noticed, where free-irq is
preceded by a "irq >= 0" check... but the sync-irq call is not covered
by the same check.

So, where sync-irq could not be eliminated completely, the missing check
was added.
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      f000fd80
    • H
      [ALSA] sound: maestro3.c fix shadowed variable warnings · e37273d3
      由 Harvey Harrison 提交于 
      change id to elem_id as it is used to initialize each mixer element
sound/pci/maestro3.c:2071:25: warning: symbol 'id' shadows an earlier one
sound/pci/maestro3.c:67:13: originally declared here

index is used in each of these places to count over the dsp's memory,
change to the name dsp_index
sound/pci/maestro3.c:2572:9: warning: symbol 'index' shadows an earlier one
sound/pci/maestro3.c:66:12: originally declared here
sound/pci/maestro3.c:2604:9: warning: symbol 'index' shadows an earlier one
sound/pci/maestro3.c:66:12: originally declared here

[tiwai - fixed coding style issues as well]
Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      e37273d3
  23. 01 2月, 2008 2 次提交
  25. 16 10月, 2007 1 次提交
  27. 11 5月, 2007 3 次提交
  29. 09 2月, 2007 2 次提交
  31. 20 12月, 2006 2 次提交
  33. 22 10月, 2006 1 次提交
  35. 05 10月, 2006 1 次提交
    • D
      IRQ: Maintain regs pointer globally rather than passing to IRQ handlers · 7d12e780
      由 David Howells 提交于 
      Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.
Signed-Off-By: NDavid Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
      7d12e780
  37. 13 7月, 2006 1 次提交
  39. 03 7月, 2006 1 次提交
  41. 23 6月, 2006 1 次提交
  43. 28 4月, 2006 2 次提交
  45. 31 3月, 2006 1 次提交
  47. 29 3月, 2006 1 次提交
  49. 22 3月, 2006 1 次提交
  51. 03 1月, 2006 2 次提交
  53. 11 11月, 2005 1 次提交
  55. 04 11月, 2005 2 次提交